Answer:
In the chemical industry, lithium-based batteries are working most efficiently and replacing nickel-cadmium batteries. To study a redox reaction in a lithium battery let's take the example of Lithium Cobalt Oxide(LiCoO2).
Following is the overall reaction taking place in Lithium Cobalt Oxide battery. Reduction and oxidation takes place at Cathode and Anode respectively. that is why it is called a redox reaction.
Reaction at cathode:
Cathode: CoO2+Li+e−→ LiCoO2 (Reduction)
Reaction at Anode:
Anode: LiC6→ C6+Li++e− (Oxidation)
Overall reaction:
LiC6 + CoO2→ C6 + LiCoO2